Truck frame



I Julie 26, 1945;

DESCRIBE] E. F. NOIRELIUS TRUCK FRAME Filed Oct. 8, 1943 2 Sheets-Sheet .1

'INVENIUR, Emil F. Noreliu; y 6. 6? W 4 \V i A TTORNEYS.

June 9 E. F. NOREL IUS 2,378,942

TRUCK FRAME Filed Oct. 8,. 1943 2 Sheets-Sheet 2 mvmma B11111 F Norelius ATTORNEYS.

P atented June 26, 1945 r TRUCKFRAME r r r F.Norelius, SpringfieldJll. C Application October 8,1943,Serial No. 505,444

I The invention described herein may be manuifactured jfiand used by or for the Government:

for: governmental purposes, without the payment tome ofjany royalty thereon.

i The presentinvention pertains to a novel frame for track+laying vehicles, wherein such a .framefis disposed at each side ofth'e vehicle,

truck I'nsome existing constructions one viding one of the sides of the fork asa member detachable from the main longitudinal member of the frame... The detachable member is ,a link in, theioutwardiside of the frame, while the remamm sme of theffork is asupporting arm extending rigidly from the longitudinal frame member in. the inward direction or, towards the centerfline of the vehicle. The link and the arm a e; formed respectively with alined fbearingsito receivethe drive shaft or axle, and, the drive sprocket ,ilslfmounted on the, shaft- ,and between the bearings. consequentlygin order to replace the sprocket, it 'is merely necessary to remove the link rather than dismantle the entire truck frame.

The connection between gitudinal member of the frame is preferably a vertical pin having mutually eccentric parts received respectively in the longitudinal member and the link. Adjustment of the pin about its axis effects an adjustment in the alinement of the truck frames with each other and with the body of the vehicle. This is another advantage over the completely rigid construction.

Another advantage resides in the fact that the link is free to swing about the vertical axis of the pin, thereby relieving transverse or horizontal stresses such as are set up in the outer forked portion of a frame of rigid construction.

An illustrative embodiment of the invention is disclosed in the following description and in the accompanying drawings in which:

Figure 1 is a side elevation of a truckframe, according to the invention, with a track mounted thereon;

Figure 2 is a plan view;

Figure 3 is a plan section;

the link and the Ion .in the other pair of ears.

' 1 15- eii ums, (01. 305-9 (Granted under the act of March 3, 1883, as

,, amended April .30, 1928; 320 O. G. 757) Figure dis a vx'ertical ,sec tionof thejconnecting pin and its mounting, and Figure, 5, is, a section on Reference to the drawings will now be made y use of like numerals to designat corr p d s partsflthroughout. i l t a. Each side of the vehicle demanded with a truck frame carrying ,wheels, around which is mounted an endless trackin- ,a ,manner 'well known in the art. Each truck includes a longi tudinalmember I which may be hollow or tubular and at the forward end of. which is mounted a fork 2 held in guides 3. The'fork carries an idler ,wheel 4 disposed forward of the member I. An adjustment bolt 5 is secured in, abridge 6 ofthe fork 2 by means of a nut 1, The bolt enters the forward end of the tubular member l and is engaged by atexisioh-sming B housed within the member ll JAfseries of bo'gie wheels 9 is supported by the member Lin any suitable manner as, for example, by acommon-bearinglll.

A supporting or stabiligii ngarni II extends from r the, member l'towards the center? line of the- 25 vehicle and is fastened to themember I,.preferablynear the rear nd thereof, by any suitable means such as welding l2. The arm terminates in a bearing i3 disposed near the centerline of the vehicle andis positioned to receive the drive shaft or axle, or an extension thereofgas will presently appear. A similar structureisjobviofusly provided at theother side of centerline;

jandihebearings [3 lie on the opposit sides of the center line and in close proximity thereto.

The rear end of the member I carries a bracket 14 formed with a pair of vertically alined ears l5, as shown more clearly in Figure 4. The bracket supports a stabilizer link, l6 having a pair of ears I! disposed adjacent to the ears IS. The connection is made by means of an eccentric pin having a cylindrical body I8 received in one of the pairs of ears and a pair of offset but mutually alined end portions l9 and 20 received In the example shown, the body portion is received in the ears [5 and theends I9 and 20 in the ears I1, but this condition would be reversed if the ears I! were disposed between the ears l5. On the end I9 is mounted a polygonal head 2| with a bushing 22 extending into the adjacent earl! and fastened to the end by a suitable key 23. By turning the head 2| an adjustment is made in the center distance of the ears l5 from the ears II, The adjustment is secured by a locking clip 24 fasgaged by the bogie wheels. By reason of the permanent rigidity oi the sup- An endless track 29 of appropriate design I trained over the drive sprocket and idler and enport arm H with the longitudinal member Lthe frame originates basically at substantially the.

longitudinal center of the axle 21, ratherthan at the center and outside of the drive sprocket as in previous constructions. :a-A. better basic st u ture is thereby obtained. t

A so, h p ace en of the r ve. s rocket a d "parts associated therewith is 'considerably'simpler thanif the inls l 6 wer perman ntly with respect to'the member 'I. In making a replacement in this ar ait isa eempa atively s mple fopetation ter mo the pmisflo a d in Finally, the alinement'of the truck frames with each oth r and the vehicle may be made when n cessary by a justing t e ccen c p in. the m neitprev 'eusl e r ed: The pi o "niquntinglqij'thelink I6 01 afverticalaxis'permits rel ,f. of stres es t n verse of th vehicle- The n ention is not limi e o the precise d tails: elf cen tr e ion here n; s o and, described, andmodifl a ion may be ma ut ep inarre v by heeppe deldi i m -J Wha lei Ji 'W'" i g i A tr ck i ame'for a ryin ene dl s track at a, side of; a; vehicle, comprising a longitudinal ber, a bearing carried by the free end of said arm, a link extending from said member outwardly of said arm, said link and arm extending beyond one end of said frame member, a removable pin connecting said link to said member, and a bearing carried by the free end of said link and coaxial with the first named bearing.

3. A truck. frame for carrying an endless track at a side of a vehicle, comprisinga longitudinal frame member, a supporting ar'm extending laterally inward and rigidly from said frame member, a bearing carried by the free end of said arm, a link extending fromsaid member outwardly of said arm, said link and arm extending beyond one endof said frame member, a removable pin connecting said link to, said member, the parts of said pin received in said member and link being eccentric to each other, means for securing said pin in selected positions about its axis, and a bearing carried by the free end of said link and co-axial with first named bearing. j 1

Artruck frame for carryingan'endiess track atja side of a vehicle, comprisin a longitudinal m the 'sQOP Qfthe invention asindicated frame. member a supporting, arm extending lateral yi in ar r gid from said ame beaabearing c ed bx the iree nd? of aidarm, con ee ed'to, s i m mb a d idarim, said link and arm exte din bey d one. shot said. frame me e abearing carriedjby the reee dofsaid' link and eoe xial w thrfi i name the g, and means atilie ther e @11 Said frame f r; support ng a Wheel a l v '32- A truek; irameior earryingian endless track eta side o a veh cle, comprising a; longitudinal rame, memben, a' unporti g, arme te din laterally. inwardand rigidly; from said? frame memframe member, a supporting arm extending later.- aliy inward, and r id y from seidl ramememb r, a bear c ie by t e re .v end, Q j ai f rm, 111 3 ex e d o a d member; u wa dly, o

sa d arm, s l nk n erm x nd ns be n one end of said frame member, a removable pin connecting said link to said member, a, bearing 1c ried by the free end or saidlinkand coaxial w h the first named bearing, an axle mounted in s ,id' ear n a a sprocket wheel on said ax e between said bearings and nearer the bearing in saidlink. v

' 5'. A truck frame for carrying an endless trapk at, a side of a vehicle, comprising a longitudinal ram mb r, a s ppo i rme t 'ding e erally inward and rigidly from said frame mem bena bearing carried by the free endof; said arm, ajlink extending from said member outwardly of said arm, said link and arm extendingbeyondone end of said frame member, a removable pinconnectingsai dzlink to said membenthe p'artsof said pin received in said member and link beihgeccentrip to each other, means for se'curing s'aid pinin selected positions about its axis, a bearingcar'- ried-by theiree end of said link and co-axialiwith first named bearing, an axle, mounted in said bearings, and a sprocket wheel on' ai d axlebetween said bearings and nearer the" bearingin ai in I a EMIL'F: NOREEIUS. 

